[gentoo-user] Slow redraw of windows following -uD --world

Folling a major update with sync followed by -vuD --world  I'm seeing
visible slowness in X when I move a window or scroll a buffer.

I'm running kde 3.5 desktop (kdebase) but I did most of the update in
console mode and then wanted to try one of the fast light window
managers.  So installed `fluxbox' and started it up.

I saw really slow and noticable sloth when moving a window.  It redrew
from the bottom up (an xterm) and took most or all of a second.

I thought it was fluxbox and was pretty disgusted after all the hype
I've seen about how fast it is.

But then starting up kde and I see the same thing but not quite as
bad.  Or at least to my eye it seemed a little faster but still not
even close to what I saw before the update.

This is a celeron 3.06 Ghz with 2GB ram so not exactly under powered.
And I know it isn't the machine since it was not acting like this
before the update.

Here is an example.... I'm typing this in an emacs terminal running
under X.  If I move the terminal even an 1/8 of inch I see redraw
happen in two pulses either up and down or down and up taking very close
to a second.

At this moment I have Konqueror, emacs and two xterms running.
Looking at top I see  96 to 99 percent idle:

Top shows:
top - 19:37:27 up 20:02,  6 users,  load average: 0.14, 0.06, 0.02
Tasks:  99 total,   2 running,  97 sleeping,   0 stopped,   0 zombie
Cpu(s):  1.0% us,  0.3% sy,  0.0% ni, 98.7% id,  0.0% wa,  0.0% hi,  0.0% si
Mem:   2075536k total,  1728552k used,   346984k free,   603132k buffers
Swap:  2008116k total,        0k used,  2008116k free,   684584k cached

So resources are not starved... I'm kind of lost as to how to debug
further...  Does the 97 sleeping jobs indicate some kind of problem or
is that pretty normal?

Any other suggestions for debugging?

Cam I do something about this in /etc/X11/xorg.conf? 


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